C3.2.4 - Limiting Reactants

Cards (2)

  • What is meant if a reactant is the limiting reactant?
    It sets a limit on how much product can form. The reactant that is left over is described as being in excess.
  • Explain the effect of a limiting quantity of a reactant on the amount of products it is possible to obtain in terms of amounts in moles or masses in grams.
    This is because, if you add more reactant, there will be more reactant particles to take part in the reaction, which means more product particles. So, the greater the amount of moles (or mass of grams) in the limiting reactant, the greater the amount of moles (or mass of grams) in the products.